{"id":2019,"date":"2019-07-06T14:36:50","date_gmt":"2019-07-06T19:36:50","guid":{"rendered":"https:\/\/kermitmurray.com\/murray\/?p=2019"},"modified":"2024-02-20T09:34:48","modified_gmt":"2024-02-20T15:34:48","slug":"matrix-assisted-laser-desorption-ionization-imaging-and-laser-ablation-sampling-for-analysis-of-fungicide-distribution-in-apples","status":"publish","type":"post","link":"https:\/\/kermitmurray.com\/research\/2019\/07\/matrix-assisted-laser-desorption-ionization-imaging-and-laser-ablation-sampling-for-analysis-of-fungicide-distribution-in-apples\/","title":{"rendered":"Matrix-Assisted Laser Desorption Ionization Imaging and Laser Ablation Sampling for Analysis of Fungicide Distribution in Apples"},"content":{"rendered":"\n
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I. Pereira, B. Banstola, K. Wang, F. Donnarumma, B.G. Vaz, K.K. Murray, Matrix-Assisted Laser Desorption Ionization Imaging and Laser Ablation Sampling for Analysis of Fungicide Distribution in Apples, Anal. Chem.<\/em> 91<\/strong> (2019) 6051\u20136056. doi:10.1021\/acs.analchem.9b00566<\/a>.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n

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ABSTRACT: A combination of matrix-assisted laser desorption ionization (MALDI) imaging and infrared (IR) laser ablation sampling with offline electrospray ionization mass spectrometry (ESI-MS) was used to determine the distribution of the fungicide imazalil in apples. MALDI images were used to determine the penetration depth of imazalil up to 7 days after its application. IR laser ablation sampling and ESI-MS were used to quantify the rate of penetration of the fungicide, which was determined to be approximately 1 mm per day. Imazalil concentration decreased in the apple skin over the course of the experiment, and after 7 days the fungicide was detected at 0.015 ppm 6 mm inside the apple. Approximately 60% of the pesticide remained in the skin after 7 days. This work demonstrates the utility of MALDI imaging for spatial localization of fungicide in fruit in combination with IR laser ablation and ESI-MS for quantitative analysis.<\/p>\n<\/div><\/div>\n\n\n\n

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\"Matrix-Assisted
Pereira, Banstola, Wang, Donnarumma, Vaz, Murray, Matrix-Assisted Laser Desorption Ionization Imaging and Laser Ablation Sampling for Analysis of Fungicide Distribution in Apples, Anal. Chem. 91 (2019) 6051<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":2021,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86,79,134,5],"tags":[64,15,135,9,174,102,77],"class_list":["post-2019","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","category-last","category-lsu","category-publication","tag-ablation","tag-imaging","tag-lsu","tag-maldi","tag-paper","tag-pesticide","tag-publication","entry"],"_links":{"self":[{"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/posts\/2019","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/comments?post=2019"}],"version-history":[{"count":2,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/posts\/2019\/revisions"}],"predecessor-version":[{"id":2022,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/posts\/2019\/revisions\/2022"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/media\/2021"}],"wp:attachment":[{"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/media?parent=2019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/categories?post=2019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/tags?post=2019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}